Frank Lien, DO
Family Medicine Physician · Redwood City, CA
Frank Lien, DO is a family medicine physician with a practice address in Redwood City, California, and NPI 1003254145, issued on Jun 11, 2013. Check the license (California 20A15755, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Frank Lien
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A15755 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1190 Veterans Blvd, Redwood City, CA 94063
- Phone
- (650) 299-2234
- Enumerated
- Jun 11, 2013
- Record last updated
- Dec 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20230327000661); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1190 Veterans Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christine Duong, PHARMDPharmacist1316584592
- Rudolf Estess, DOFamily Medicine Physician1942761861
- Roberta Heck, NPAdult Health Nurse Practitioner1093895245
Verify Frank Lien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15755Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
314 Medicare Part D claims for 192 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 11 claims were for opioids.
Most prescribed
- Amoxicillin17 claims
- Losartan Potassium13 claims
- Paxlovid12 claims
- Prednisone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Kaiser Foundation Health Plan OF The NorthwestHillsboro, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Frank Lien among 17,133 family medicine physician records in California
Frank Lien, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Redwood City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Geny Augustine, MDRedwood City, CA 940631083108401
- Kelley Brinsky, DORedwood City, CA 940631578977336
- Amisha Chhipwadia, MDRedwood City, CA 940631114037264
- Alan Galitz, MDRedwood City, CA 940631699853259
- Lizzy Hsu, MDRedwood City, CA 940631376695171
- Andrew Hwang, MDRedwood City, CA 940631740505825
- Ahalya Joisha, M.DRedwood City, CA 940631760536577
- Sung Knueppel, MDRedwood City, CA 940631407967680
Common questions
What is Frank Lien, DO's NPI number?
Frank Lien, DO's National Provider Identifier (NPI) is 1003254145, issued on Jun 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Frank Lien, DO located?
The NPPES record lists a practice address at 1190 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 299-2234. Providers update this record themselves, so call before visiting.
How can I verify Frank Lien, DO's license?
NPPES lists California license number 20A15755, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Frank Lien, DO prescribe under Medicare Part D?
In 2024, Frank Lien, DO had 314 Medicare Part D claims for 192 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.